Document Type
Article
Publication Date
1-1-2002
Publication Title
Publications of the Astronomical Society of the Pacific
Volume
114
Issue Number
801
First Page
1234
Last Page
1251
DOI
10.1086/342765
Disciplines
Astrophysics and Astronomy
Abstract
Planetary nebulae (PNe) are now well established as probes of galaxy dynamics and as standard candles in distance determinations. Motivated by the need to improve the efficiency of planetary nebulae searches and the speed with which their radial velocities are determined, a dedicated instrument—the Planetary Nebula Spectrograph, or PN.S—has been designed and commissioned at the 4.2 m William Herschel Telescope. The high optical efficiency of the spectrograph results in the detection of typically ∼150 PNe in galaxies at the distance of the Virgo Cluster in one night of observations. In the same observation, the radial velocities are obtained with an accuracy of ∼20 km s .
Recommended Citation
N. G. Douglas, M. Arnaboldi, K. C. Freeman, K. Kuijken, M. R. Merrifield, Aaron J. Romanowsky, K. Taylor, M. Capaccioli, T. Axelrod, R. Gilmozzi, J. Hart, G. Bloxham, and D. Jones. "The Planetary Nebula Spectrograph: the green light for galaxy kinematics" Publications of the Astronomical Society of the Pacific (2002): 1234-1251. https://doi.org/10.1086/342765
Comments
Copyright © 2002 Published by The University of the Chicago Press on behalf of Publications of the Astronomical Society of the Pacific.. All rights reserved. The published article may be found at :http://dx.doi.org/10.1086/342765.